Data processing: generic control systems or specific application – Specific application – apparatus or process – Article handling
Reexamination Certificate
2006-12-15
2008-03-11
Crawford, Gene O (Department: 3651)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Article handling
C221S007000, C221S002000, C221S013000, C250S22300B, C250S224000, C250S216000
Reexamination Certificate
active
07343220
ABSTRACT:
For ensuring that a vending machine motor will continue to operate until a product has descended through a vending space or an established time interval has elapsed, an optical beam is established across the vend space through which a product must drop. A change in beam intensity is detected. By preference infra red light is emitted at one focal point of an elliptical reflector, and detected at the other focal point. The light is emitted in pulses in the preferred embodiment, and the optical sensing system has automated calibration and error detecting functions.
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Hair, III James M.
Spentzos Kyriakos P.
Automated Merchandising Systems Inc.
Crawford Gene O
Davidson Berquist Jackson & Gowdey LLP
Waggoner Timothy
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